Pit Ultima Hybrid Assembly Type B

PRODUCT CODE: 50203768

The ULTIMA Hybrid utilises the inherent benefits of the STAKKAbox™ ULTIMA Connect system, providing amplified Class D strength capabilities without compromising on ease of installation.

  • Materials
    Ductile Cast Iron, Glass-Reinforced Plastic (GRP), High Density Polyethylene (HDPE), Precast Concrete
  • Size
    3140mm (L) x 1200mm (W) x 1210mm (D)
  • Load Rating

Features & benefits

Fast and Easy to Install

STAKKAbox™ access pits are significantly faster to install than conventional alternatives, providing substantial cost reductions for the installer. The modular assembly solution incorporates the ULTIMA Connect pit system, engineered ULTIMA beams and an interconnecting precast concrete base slab and encasement for rapid installation.

Flat Pack Option

STAKKAbox™ ULTIMA Hybrid systems can be sent to site in a ‘flat pack’ arrangement, allowing for flexibility in delivery and installation. A large pit system can be reduced to a number of pallets rather than occupying an entire truck, thereby reducing total freight costs.

Sectional & Twin Wall Design

ULTIMA Hybrid pits are built to required depth by adding 150mm sections. Due to the twin wall design, individual sections are lightweight, meaning they can be easily lifted manually on site. Each access pit possesses vertical and horizontal ribs, resulting in a product that is strong vertically and on the sidewall.

Full specifications


Glass-reinforced plastic (GRP), is a composite material, fibre-reinforced polymer made of a plastic reinforced by fine fibres made of glass. GRP has a high strength to weight ratio, high temperature range, high mechanical properties and is fire retardant. Additionally, GRP is also chemically inert and isn’t susceptible to creep.

Load Rating

STAKKAbox™ ULTIMA Hybrid is suitable for installation in environments rated to Class D load rating (ultimate limit state design of 240kN) under the Australian Standard AS/NZ 3996.

How it works

The ULTIMA Hybrid utilises the ULTIMA Connect system with the added feature of ULTIMA beams specifically developed for large scale access pits of 2 metres in length and above.